Pre-set Spiraled Coil Aneurysm Occlusion Device
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Solution Overview
Problem
Current methods for treating aneurysms, such as surgical procedures and endovascular coil placement, are risky, time-consuming, and costly, with coils often failing due to aneurysm growth at the dilatation area proximal to the neck.
Innovation Solution
A system comprising a wire guide and a core wire with an occlusion device that deploys as a pre-set spiraled coil to occlude aneurysms, potentially coated with anti-thrombogenic, cytogenic, or thrombogenic materials to control cell growth and thrombus formation, using a delivery system to position and deploy the device within the body vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If endovascular coil placement is used to treat aneurysms, then the treatment avoids open surgery risks, but the procedure is time-consuming and costly with high failure rates due to aneurysm growth at the dilatation area
Solution Approach 1:
The occlusion device is divided into multiple discrete coils that can be deployed sequentially or simultaneously within the aneurysm sac. Each coil segment works independently to occlude blood flow, allowing for modular placement that reduces procedural complexity and time compared to traditional packed coil techniques.
Solution Approach 2:
The occlusion device is pre-formed into a specific three-dimensional configuration that is optimally suited for aneurysm occlusion. This pre-shaping eliminates the need for time-consuming intra-procedural coil manipulation and positioning, significantly reducing procedure time while maintaining effective aneurysm sealing.
2Reliability
If traditional coil packing is used to fill the aneurysm dome, then blood flow into the aneurysm is prevented, but the procedure involves substantial time consumption and high costs with coil failure due to aneurysm growth
Solution Approach 1:
The occlusion device is pre-formed into a specific three-dimensional configuration that is optimally suited for aneurysm occlusion. This pre-shaping eliminates the need for time-consuming intra-procedural coil manipulation and positioning, significantly reducing procedure time while maintaining effective aneurysm sealing.
Solution Approach 2:
The occlusion device utilizes shape memory alloy materials that change their physical properties in response to temperature changes. When deployed, the device transitions from a compressed delivery state to an expanded functional state, automatically adapting to the aneurysm geometry and ensuring reliable occlusion without complex procedural steps.
3Productivity
If the occlusion device is deployed as a pre-set spiraled coil, then blood flow interference is achieved efficiently, but the device requires a delivery system with wire guide and core wire mechanisms
Solution Approach 1:
The occlusion device is nested within a delivery catheter during storage and transport, which is in turn guided by a wire guide and core wire system. This nested configuration allows the complex pre-formed spiraled coil to be delivered through small access points and deployed precisely at the target aneurysm site, achieving high occlusion efficiency despite the sophisticated delivery mechanism required.
Data Source
AI summary
A system and method for occluding an aneurysm formed in a dilatation area of a body vessel are disclosed. The system comprises a wire guide, a core wire, and an occlusion device. The wire guide comprises a proximal end and a distal end, and has a passageway that extends from the proximal end to the distal end. The core wire comprises a distal end and a proximal end, and is disposed through the passageway so that the proximal end of the core wire proximally extends beyond the proximal end of the wire guide. The occlusion device comprises a distal end and a proximal end, and has a deployed state and an undeployed state. The occlusion device has a pre-set spiraled coil shape when in the deployed state in the vessel. The occlusion device is disposed distally from the core wire in the passageway.